Cita APA

Grubel, H. G. (1971). Effective tariff protection. Geneva: General Agreement on Tariff and Trade.

Chicago Style Citation

Grubel, Herbert G. Effective Tariff Protection. Geneva: General Agreement on Tariff and Trade, 1971.

Cita MLA

Grubel, Herbert G. Effective Tariff Protection. Geneva: General Agreement on Tariff and Trade, 1971.

Atenció: Aquestes cites poden no estar 100% correctes.